Title:
FILTER MEDIUM FOR AIR FILTER, AIR FILTER PACK, AND AIR FILTER UNIT
Document Type and Number:
WIPO Patent Application WO/2023/176801
Kind Code:
A1
Abstract:
Provided is a filter medium for an air filter, the filter medium having a structure with a good PF value. Also provided are an air filter pack and an air filter unit. The filter medium for an air filter contains a resin and comprises, on a first surface thereof, a plurality of first protrusions protruding in the direction of passage of airflow through the filter medium, and on a second surface, which is a reverse surface in relation to the first surface of the filter medium, a plurality of second protrusions protruding in the direction of passage of airflow. The total projected surface area of the plurality of first protrusions and the plurality of second protrusions when the entire filter medium is projected in the airflow passage direction is 50-100% the projected surface area of the entire filter medium when the entire filter medium is projected in the airflow passage direction. The ratio of the effective filter medium surface area of the filter medium to the projected surface area of the entire filter medium when the entire filter medium is projected in the airflow passage direction is 110% or greater.
Inventors:
KIMURA TAKASHI
SHIBUYA YOSHIYUKI
HARA SATOSHI
SHIBUYA YOSHIYUKI
HARA SATOSHI
Application Number:
PCT/JP2023/009731
Publication Date:
September 21, 2023
Filing Date:
March 13, 2023
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
B01D39/16; B01D46/10
Domestic Patent References:
| WO2021010178A1 | 2021-01-21 |
Foreign References:
| JP2013166268A | 2013-08-29 | |||
| JP2015107482A | 2015-06-11 |
Attorney, Agent or Firm:
SHINJYU GLOBAL IP (JP)
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